Highway Detailed Design

Sanderson Associates offer a full range of Highway Detailed Design Services from the design of a simple vehicle access for one dwelling to signalised junctions and re-routing of primary dual carriageways through City centres to serve major developments. Our Clients range from private individuals through to all members of the Private Sector and a variety of Public Bodies.

The level of services we offer range from the provision of preliminary design advice, through the detailed design process to the preparation of construction drawings, construction documents, tender processes (including tender appraisal), pre- start meetings, project management, works on site supervision, agreeing final accounts, certificates of completion and the preparation of as built drawings.

Where there are on site highway works or, if the initial planning application's Transport Assessment has identified the need for off site highway improvements (or during the negotiation period these become a requirement of the Local Planning or Highway Authority), it is usual for us to examine these in enough detail to be able to advise our Clients on the likely cost implications and deliverability of the works. This is important not only for budget costs, which may impact on the viability of the project, but also if additional third party land is found to be needed through a requirement of the Authority which may seriously effect the delivery of the works or the overall project.

Design Standards

The design process is always carried out with close consultation with the Local Highway Authority to ensure that the designs are compliant with current design standards and are to the satisfaction of the appropriate body. The design standards normally used are drawn from the ‘Design Manual for Roads and Bridges’ (DMRB), Manual for Streets, Manual for Streets 2: Wider Application of the Principles and local guides as adapted by the Local Highway Authority. Close liaison can also be provided if required with the appointed contractors when works are under construction.

Construction Drawings

The level of detail required in the design of a scheme will depend on the scope and complexity of the project. Detailed design drawings at 1:500/1:200 scale are typically provided and the following is a list of the most common drawings normally required. The list is by no means exhaustive and additional drawings are quite often necessary dependant on the Local Authority and works being undertaken:

General Arrangement

Site Clearance

Fencing

Drainage Layout

Earthworks

Carriageway and footway construction details

Kerbing, edging and channel details

Traffic signs and road markings

Landscaping proposals

Street Lighting

Cross and Longitudinal Sections

Setting out details

Standard construction details

Utility Company Apparatus

Detailed Design

Sanderson Associates use the latest design tools and applications in the detailed design process including:

AutoTrack for checking various vehicle swept paths for the proposed horizontal design

KeySIGNAL for the design of new traffic signal schemes

KeyLINES for the design of new road marking schemes

KeySIGN for the design of new traffic signs

KeyPOST for the design of new sign posts

Highway Agreements

When a development requires alterations or improvements to an existing public highway, for the works to be implemented the developer must first enter into an appropriate form of agreement with the Highway Authority. These agreements are contained within the Highways Act 1980.

Sanderson Associates have the experience and expertise to guide a developer through this process and coordinate with the Highway Authority on their behalf. The most common agreements required for the completion of highway works are briefly explained below:

Section 278 Agreement - This agreement is appropriate when a development requires alterations to be made to the existing public highway and may require the developer to dedicate some of the development land as new public highway as part of the works. Examples of such works could be the construction of a new access/junction or improvements such as a new roundabout, additional traffic lanes etc to an existing access/junction.

Section 38 Agreement - This agreement is appropriate where new residential or industrial estate roads are to be constructed to adoptable standards and in the future are to be maintained by the Highway Authority as adopted public highway.

Section 184 Agreement - Primarily this agreement is for the formation of vehicle crossings over footways and verges for single dwellings or shared private drives. However, it is also common for Highway Authorities to use this agreement where a developer intends to construct or alter any site access or accesses where these are the only highway works required to serve the development. Examples of this would be improved bell mouth junctions or new heavy duty industrial types of access.
(Note – this agreement may not be necessary if the works are included within a Section 38 Agreement).

Section 50 License - Unless covered by any of the above agreements, excavations in the public highway for the purposes of laying new apparatus, connections to existing services, advance trial holes etc require the issue of a license by the Highway Authority under Section 50 of the New Roads and Street Works Act 1991.

Contract Documents

Where required, we will prepare contract documents and can tender works on behalf of Clients. This includes preparation of highway contracts in accordance with the ‘NEC3 Engineering and Construction Contract’ suite of documents and the preparation of Specifications and Bill of Quantities in accordance with the ‘Manual of Contract Documents for Highway Works’ (MCDHW) or as amended by the Local Highway Authority.

Project Management and Supervision

We regularly provide project management and supervision roles on a variety of highway schemes. This includes managing the contractor on site and coordinating with the Client to ensure that the implementation of the highway works is completed as smoothly as possible and that the Client’s deadlines are achieved.

Sanderson Associates have been very helpful for us and our clients. They proved efficiency and competitive pricing. Thank you for your services. Andreea Raicu, Architect, Tang & Associates Ltd

Flood Risk Assessment, Testimonial, Industrial Development, Sheffield

Tue 19 March 2019

Sanderson’s were a great in helping us with our planning application for a new material silo at our manufacturing base in Sheffield. Darren was efficient and swift in his discussions with the council on the need for a flood risk assessment on the site. Darren’s knowledge of the site and surrounding area and consequent discussions […]

Travel Plan

Wed 21 November 2018

We have worked with Ashley, found the service very professional, efficient and cost-effective. We received the surveys and reports on time and were kept fully appraised with everything, excellent service all round. Recommend using Sanderson again in the future. Thank you, Al Ihsan Trust

Access Appraisal in Support of the Reinstatement of Access to a Residential Dwelling

Tue 7 August 2018

Brett, I would just like to pass on my personal thanks for the assistance you offered us in our planning application to reinstate an unused driveway into our renovation property. From the initial contact with the office staff, through the quote and the carrying out of the road survey, drawings, and associated work through to […]

Highway Technical Letter in Support of Residential Development – Testimonial

Thu 25 January 2018

Excellent service, very professional and enabled a very positive response back to the Highways Agency with a site plan we were having difficulties with. I’d highly recommend Sanderson’s. Peter Wilson, Individual

During the course of the compiling the report for submission to planning I found Adam Darwin’s attitude and approach was very professional and supportive. We had several issues to resolve and I found him to respond very quickly and produce revised drawing for discussion with an excellent turnaround time. His phone manner and advice were […]

Flood Risk Assessment, Data Centre, Keighley

Wed 8 March 2017

Good communication and persistence coupled with a high level of professional expertise, has enabled what looked initially to be an insurmountable objection to be overcome. J O Steel, J O Steel Consulting, Bingley

Swept Path Analysis, New Build House, Testimonial

Wed 15 February 2017

Sandersons were appointed to conduct our swept path analysis study for a modern new build house in London. We found the service personable, attentive and thorough. Further, when confronted by a design problem, they were creative and positively contributed to its resolution. Ben Kirk, Associate, Edgley Design

Transport Statement – Proposed Residential Development, Shipley

Thu 8 December 2016

You were recommended to us for a housing site where you had previous experience of the neighbouring land. Every part of the experience was simple and positive and we have no problem recommending your services and consider you for further works. From us at Lumia Homes part of Incommunities Housing Association we would like to […]

Mr Greenwood is a highway wizard and worked his magic on the Hardingham scheme, without Sandersons input I am confident this scheme would have not passed… Henry Isotta-Day – Architectural Design Engineer, Clayland Architects